how does cigarette smoke cause lung cancer The harmful chemicals in smoking directly damage cells, causing DNA mutations that increase risk. Over time, these damaged cells grow abnormally, leading to tumor formation in the lungs. Quitting smoking Preventing Chronic Disease: April 2007:
Preventing Chronic Disease: April 2007: 06_0024 How does smoking cause cancer? Cancer Research UK Cigarette Smoking Is the Main Cause of Lung Cancer HealthXchange World No Tobacco Day: Choose Health, Not Tobacco Tobacco use is a risk factor for several types of cancer, including cancers of the lung, mouth, throat, esophagus, pancreas, bladder, and stomach.
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